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allc

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A small typescript package for color conversion.

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/** * Calculates the lightness component of HSL from HSV. * The hue component is omitted because it is unnecessary for the computation. * * @param s The saturation component of HSV, typically in the range [0, 1]. * @param v The value component of HSV, typically in the range [0, 1]. * * @returns The lightness component of HSL, typically in the range [0, 1]. * @see https://en.wikipedia.org/wiki/HSL_and_HSV#HSV_to_HSL */ export const toHSLLFromHSV = ( s: number, v: number, ) => v * (1 - s / 2); /** * Calculates the saturation component of HSL from HSV. * The hue component is omitted because it is unnecessary for the computation. * * @param s The saturation component of HSV, typically in the range [0, 1]. * @param v The value component of HSV, typically in the range [0, 1]. * * @returns The saturation component of HSL, typically in the range [0, 1]. * @see https://en.wikipedia.org/wiki/HSL_and_HSV#HSV_to_HSL */ export const toHSLSFromHSV = ( s: number, v: number, ) => { const l = v * (1 - s / 2); return +(l === 0 || l === 1) * (v - l) / Math.min(l, 1 - l); };